Children's Museum of Manhattan
212 West 83rd St, Manhattan
You can get crafty at CMOM nearly any time as this madly popular museum hosts several craft workshops on weekend days and some scattered throughout the week as well. The Children's museum of Manhattan takes care to create developmental educational programs with lots of variety. You may get to try silk-screening, tie-dye t-shirt making, or mask making, often led by a visiting artist. Times vary so check their calendar for the schedule before your visit and sign up or workshops at the activities desk when you arrive. Most are for 5-and-ups but younger siblings are often allowed if they aren’t disruptive.  Free with museum admission.

Museum of Arts and Design 
2 Columbus Circle, Manhattan
Excellent workshops are offered at MAD's Studio Sundays. Led by artists, you will create an "art object" from clay, metal, fiber, wood, glass, paper or rubber. No glue sticks and googly eyes here; this is the real deal. Click here for more details. They also offer really fun Saturday MAD “Family Day” which runs about 3 hours and offers multiple craft-making opportunities geared for kids age 5-and-up. $30/family.
Occasional Sundays from 2pm (sharp) to 4pm
Ages 6-and-up.  $10 / person

Rubin Museum of Art
150 West 17th St, Manhattan
Make lanterns, mandalas, story scrolls, gold leaf manuscripts and other art projects inspired by the museum's collection of Himalayan art. Family Art Making Workshops include a project plus a story to inspire little creators. Saturdays from 2-3:30pm. Ages 5 and up. $10 / person
 

Staten Island Children's Museum
1000 Richmond Terrace, Staten Island
Tuesdays are clay day at the Staten Island Children's Museum at Snug Harbor. From 1:30 to 4:30 kids can create with air-dry clay and make creations to take home. Art and printmaking workshops are offered on Saturdays. All ages welcome.
$6 admission for kids 1-and-up, crafting included / free! with admission.

The Skyscraper Museum
39 Battery Place, Manhattan

Saturday morning workshops feature architecture and engineering-inspired projects often involving building with anything from toothpicks to recyclables. Family Programs are Saturdays mornings from 10am or 10:30am to 11:30 or noon, depending on the project. Ages vary. $5 / child. Call to reserve a spot by 5pm on Friday before the event: 212-945-6324.

South Street Seaport Museum
12 Fulton St, Manhattan

Fun workshops that usually have a crafting component like early toy decorating. making gum or making “sailor valentines” with sea shells.  Family Programs take place about once a month on a Saturday between noon and 4pm, but the museum website is chronically un-updated so call for information. (212) 748-8786

American Folk Art Museum
45 West 53rd St, Manhattan

Monthly theme-based arts-and-crafts workshops are inspired by the folk art from the museums collection. The first Saturday every month, from 1pm to 2:30 pm. Ages 4 to 12 , Free with Admission (free for children under 12, $7 for older kids)
 

Lefferts Historic House
Prospect Park: intersection of Flatbush and Ocean Avenues and Empire Boulevard, (Brooklyn)

Get crafty old school at Lefferts Historic House where kids can try some of the crafts children would have in the 19th Century: candle-making, basket weaving, doll-making, and sewing plus take a turn at other old timey activities like butter churning or playing games of yesteryear. Every Saturday and Sunday from 2:30 - 3:30 p.m., All ages, Free!

St, John the Divine Workshops
112 St & Amsterdam Ave, Manhattan

One of our favorite workshops is the Medieval Arts Workshops at St John the Divine where kids (and their adults) can make gargoyles, stained glass rose window designs, or try a stone rubbing. THey also have Kids Cathedral and Seasonal Craft Workshops. Saturdays from 10 am-noon for all workshops geared for children ages 4-and-up. Kids Cathedral Program: Thursdays in February at 10:30 am, for tots ages  2-4. Medieval Arts admission is $6 / child (no charge for accompanying adults). All other Family Workshops range from $6 to $10 / child

Wave Hill's Family Art Projects
675 West 252nd St, Bronx

Nature based and inspired Family Art Workshops, often with a cultural twist, let families incorporate unusual materials like twigs, roots and other plant materials or other nature inspired crafts, like pop up cards. Every Saturday and Sunday from 1-4pm in The Sally and Gilbert Kerlin Learning Center. Intended for families, all ages are welcome. Free with Admission

Children's Galleries for Jewish Culture
515 West 20th St, Suite 4E, Manhattan

Avid crafters get a bargain here with a $25 membership which gets the whole family admission to a year full of weekly workshops. Drop in for projects and activities that range from learning how to weave to making matzah boxes. There are usually more than one project per day and sometimes other activities like a treasure hunt. Open Sundays from 2pm-5pm. Ages 5-and-up only. (Note: they do not permit younger children or strollers inside.) Free with annual membership of $25 (good for a family of 5) or drop-in admission is $8.

Jewish Museum's Drop-in Workshops
Fifth Avenue at 92nd St, Manhattan
Craft-oriented art projects art that expand on the gallery visit.
Regular Workshops every Sunday (October 18th thru June 5th) from 1pm to 4pm. Ages 3-and-up.  Free with Admission (Children under 12 free)

Also, they usually offer special “Vacation Day” craft workshops during school-break times. Ages 4-and-up for these workshops. Free with Admission.